I'm making this post for some questions that have been bugging for me quite sometime. I searched for these topics on the net, but for some reason they have never been discussed. I hope you guys could shed some light on these:

1. VR (or IS): Why is the VR technology limited to the lens? Why can't they have the VR technology on the camera itself? As I understand the VR tech, it simply shifts the plane whenever it detects some vibration. Can this be done on the sensor/camera itself?

2. Is the sensor-cleaning technology patented by Canon only? Nikon is not using this technology or is there a compensating technology Nikon has developed (I only know the dust reference photo option, but that's it right?). Is there an in-camera function to physically clean the sensors.

3. I know almost all DSLR's have cropped sensors. Is it a conscious effort to crop the sensors to lower the costs, or is there some true benefit to this in terms of image optimization?

4. If the sensors are the digital world's version of film, is it possible to have this become replaceable in the future? Somewhat a replaceable digital back when the sensors has reached its life or when it is damaged? (I have to admit this is the stupidiest question, here, but worth a shot... heheheh).

5. What color management scheme is the LCD display showing? Adobe sRGB. I noticed the pics are different when downloaded to my PC when i have been using Adobe sRGD both on the image optimization options and color scheme on my Adobe PS.

Sorry for the newbie questions. :D

IMHO...all this technology ek!ek! are just maketing strategies. they create a lot of controversial things that makes their product more interesting.

[QUOTE=MelvinSevilla]I'm making this post for some questions that have been bugging for me quite sometime. I searched for these topics on the net, but for some reason they have never been discussed. I hope you guys could shed some light on these:

1. VR (or IS): Why is the VR technology limited to the lens? Why can't they have the VR technology on the camera itself? As I understand the VR tech, it simply shifts the plane whenever it detects some vibration. Can this be done on the sensor/camera itself?

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Konica-Minolta has already done this with their anti-shake technology. The feature is incorporated within the DSLR body.

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2. Is the sensor-cleaning technology patented by Canon only? Nikon is not using this technology or is there a compensating technology Nikon has developed (I only know the dust reference photo option, but that's it right?). Is there an in-camera function to physically clean the sensors.
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Wasn't Sony the first one to come up with this feature? But the dust still remains within the sensor area chamber. You still have to resort to using a rubber blower to get the dust out of the body itself.

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3. I know almost all DSLR's have cropped sensors. Is it a conscious effort to crop the sensors to lower the costs, or is there some true benefit to this in terms of image optimization?
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On one hand, full frame sensors the size of a 35mm frame are expensive (check out the price of a Canon 1Ds, 1Ds Mk II, 5D and the Kodak Pro 14n/14c. So using smaller imaging sensors does lower the cost.

A digital sensor with a FOV crop makes use only of the centermost portion of a SLR lens meant for film bodies. That's always the sweetest spot of the lens. :D

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4. If the sensors are the digital world's version of film, is it possible to have this become replaceable in the future? Somewhat a replaceable digital back when the sensors has reached its life or when it is damaged? (I have to admit this is the stupidiest question, here, but worth a shot... heheheh).
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Someone before came up with a feature that retrofits a sensor onto a 35mm SLR body. The are digital backs that can be retrofitted onto medium format and large format film cameras.

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5. What color management scheme is the LCD display showing? Adobe sRGB. I noticed the pics are different when downloaded to my PC when i have been using Adobe sRGD both on the image optimization options and color scheme on my Adobe PS.
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I don't know.

From experience, the LCD at the back of the digital camera is the least accurate way to judge exposure and color.

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1. Konika Minolta started the anti-shake incorporated in the body. The Sony DSLR inherited this. The new Pentax DSLR has also this tech.

2. Olympus is the first manugacturer to put this in their DSLR with their Supersonic Dust Removal.

3. I believe it's because of the price of the sensor.

4. There was a Digital Film sold before. Its has same shape like a regular film for use on 35mm film cameras.

5. AFAIK, LCD displays can only display in sRGB format.


Those are not stupid questions. Maybe my answers are :)

for the first question, i believe, all dSLRs can have this feature in the Body itself without even adding to the cost, most of the modern P&S camera has this feature now.. i just think its a marketing strategy, so the brand can sell these overpriced cra....este ...stuff.:Grin: .....or I may be wrong, maybe these IS/VR ek ek may be more effective on Lens than on body.

AFAIK IS is more effective in the lens. There is more provision for movement in the lens body than in the sensor chamber. Also the farther up the light path the correction is made the better. Its similar in principle as camera shake being magnified by focal length. The motion is magnified by the time it reaches the sensor which would require an equally magnified movement of the sensor to correct. Imagine having your sensor bobbing around like a bobble head or those dogs they sell in the street. :)

Oh and the technology in many point and shoot cams like the Panasonic Mega OIS and Sony Super Steady Shot are lens based IS.

Imagine having your sensor bobbing around like a bobble head or those dogs they sell in the street. :)



that's how the sony alpha works.. :Grin:

A digital sensor with a FOV crop makes use only of the centermost portion of a SLR lens meant for film bodies. That's always the sweetest spot of the lens. :D


This makes sense. So is it better to make use of Non-EFS or Non-DX based lens?

In my opinion yes. :D

This makes sense. So is it better to make use of Non-EFS or Non-DX based lens?

Thanks, this is worth considering since I'm planning to get the Nikon 18-200 VR DX lens this Christmas. I need to weight things more.

:D

@ Melvin. You're not a Newbie noh?! Don't worry about those things. The most important thing is you can produce great photos =)